Fix fuzzer: VSyncPredictor::mIdealPeriod=0

Change fuzzer so it does not pass 0 for mIdealPeriod to avoid div by 0.

Bug: 289711305
Bug: 242440371
Test: atest VSyncPredictorTest
Change-Id: I4dd7bf7a96c50b98a3c5fa0a417dea5d63afbf6d